Untiedt, C;
Caturla, MJ;
Calvo, MR;
Palacios, JJ;
Segers, RC;
Van Ruitenbeek, JM;
(2007)
Formation of a metallic contact: Jump to contact revisited.
PHYS REV LETT
, 98
(20)
, Article 206801. 10.1103/PhysRevLett.98.206801.
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Abstract
The transition from tunneling to metallic contact between two surfaces does not always involve a jump, but can be smooth. We have observed that the configuration and material composition of the electrodes before contact largely determine the presence or absence of a jump. Moreover, when jumps are found preferential values of conductance have been identified. Through a combination of experiments, molecular dynamics, and first-principles transport calculations these conductance values are identified with atomic contacts of either monomers, dimers, or double-bond contacts.
| Type: | Article |
|---|---|
| Title: | Formation of a metallic contact: Jump to contact revisited |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.98.206801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.98.206801 |
| Language: | English |
| Additional information: | © 2007 The American Physical Society |
| Keywords: | SINGLE-ATOM CONTACT, TRANSITION-METALS, ADHESION, CONDUCTANCE, MECHANISMS, SIGNATURE, TIP |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/141512 |
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